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test run time reduced

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This commit is contained in:
Alexey Kudravtsev
2015-09-16 14:58:38 +03:00
parent 29a947803d
commit 149627ffff
1 changed files with 33 additions and 17 deletions
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platform/platform-tests/testSrc/com/intellij/openapi/vfs/newvfs/impl/FileNameCacheMicroBenchmark.java
+33 -17
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@@ -44,10 +44,12 @@ public class FileNameCacheMicroBenchmark {
try {
IdeaTestFixture fixture = IdeaTestFixtureFactory.getFixtureFactory().createLightFixtureBuilder(LightProjectDescriptor.EMPTY_PROJECT_DESCRIPTOR).getFixture();
fixture.setUp();
long start = System.currentTimeMillis();
runTest(200, "All names in cache");
runTest(50000, "Cache almost overflows");
runTest(120000, "Cache certain overflow");
long elapsed = System.currentTimeMillis() - start;
System.out.println("Total elapsed: " + elapsed/1000.0 +"s");
fixture.tearDown();
}
@@ -68,11 +70,16 @@ public class FileNameCacheMicroBenchmark {
for (int j = 0; j < queryCount; j++) {
final CharSequence name = FileNameCache.getVFileName(ids[threadRandom.nextInt(ids.length)]);
if (blackHole == System.identityHashCode(name.hashCode())) {
if (blackHole == name.hashCode() && blackHole+1 == name.hashCode()) {
failure();
}
}
}
@Override
public String toString() {
return "random access";
}
};
private static final TestIteration LONG_RANDOM_ACCESS_WITH_GET_PATH = new TestIteration() {
@@ -88,6 +95,11 @@ public class FileNameCacheMicroBenchmark {
}
}
}
@Override
public String toString() {
return "random access + getPath";
}
};
private static final TestIteration LINEAR_SCAN_AND_RANDOM_ACCESS_WITH_GET_PATH = new TestIteration() {
@@ -110,6 +122,11 @@ public class FileNameCacheMicroBenchmark {
LONG_RANDOM_ACCESS_WITH_GET_PATH.doTest(threadNumber, ids, threadRandom, queryCount);
}
@Override
public String toString() {
return "linear scan + random access + getPath";
}
};
private static void runTest(int nameCount, String name) throws InterruptedException, ExecutionException {
@@ -123,20 +140,19 @@ public class FileNameCacheMicroBenchmark {
measureAverageTime(ids, 1, LONG_RANDOM_ACCESS);
measureAverageTime(ids, 4, LONG_RANDOM_ACCESS);
//measureAverageTime(ids, 1, LONG_RANDOM_ACCESS_WITH_GET_PATH);
//measureAverageTime(ids, 4, LONG_RANDOM_ACCESS_WITH_GET_PATH);
//
//measureAverageTime(ids, 1, LINEAR_SCAN_AND_RANDOM_ACCESS_WITH_GET_PATH);
//measureAverageTime(ids, 4, LINEAR_SCAN_AND_RANDOM_ACCESS_WITH_GET_PATH);
measureAverageTime(ids, 1, LONG_RANDOM_ACCESS_WITH_GET_PATH);
measureAverageTime(ids, 4, LONG_RANDOM_ACCESS_WITH_GET_PATH);
measureAverageTime(ids, 1, LINEAR_SCAN_AND_RANDOM_ACCESS_WITH_GET_PATH);
measureAverageTime(ids, 4, LINEAR_SCAN_AND_RANDOM_ACCESS_WITH_GET_PATH);
}
private static boolean warmedUp;
private static void warmUp(int[] ids) throws InterruptedException, ExecutionException {
if (warmedUp) return;
System.out.println("Warming up");
for (int i = 0; i < 200000; i++) {
runThreads(ids, 2, 1000, LONG_RANDOM_ACCESS);
//runThreads(ids, 2, 1000, LONG_RANDOM_ACCESS_WITH_GET_PATH);
//runThreads(ids, 2, 1000, LINEAR_SCAN_AND_RANDOM_ACCESS_WITH_GET_PATH);
}
Thread.sleep(10000);
@@ -146,32 +162,32 @@ public class FileNameCacheMicroBenchmark {
private static int getPath(int id, int[] ids) {
int result = 0;
result += System.identityHashCode(FileNameCache.getVFileName(ids[id]));
while (id > 10) {
result += System.identityHashCode(FileNameCache.getVFileName(ids[id / 10]));
while (id > 0) {
result += FileNameCache.getVFileName(ids[id]).hashCode();
id /= 10;
}
return result;
}
private static void measureAverageTime(int[] ids, int threadCount, TestIteration iteration) throws InterruptedException, ExecutionException {
System.out.println("Running "+threadCount+" threads");
System.out.println("Running "+threadCount+" threads, using "+iteration);
TLongArrayList times = new TLongArrayList();
for (int i = 0; i < 10; i++) {
long time = runThreads(ids, threadCount, 20000000, iteration);
long time = runThreads(ids, threadCount, 2000000/*0*/, iteration);
System.out.println(time);
times.add(time);
}
times.sort();
System.out.println("Median for " + threadCount + " threads: " + times.get(times.size() / 2));
long median = times.get(times.size() / 2);
System.out.println("Median for " + threadCount + " threads: " + median+"ms");
System.out.println();
}
abstract static class TestIteration {
private abstract static class TestIteration {
abstract void doTest(int threadNumber, int[] ids, Random threadRandom, int queryCount);
protected final void failure() {
static void failure() {
System.out.println("Failure");
assert false;
}